DHT22 Digital Sensor for Temperature and Humidity

by GW
114 kr 91 kr

This is a low-cost Digital Temperature-Humidity Sensor that works with the single-wire interface. This digital sensor uses the DHT22 on its thermistor and humidity sensor. The idea is simple, the DHT22 does not need analog input pins. All it needs is communication with data-pin to send the digital signals. This DHT22 Digital Temperature-Humidity Sensor does not need any additional hardware because this device is calibrated. Using the DHT22 Digital Sensor is easy but make sure to be very careful about the timing. The average data-refresh speed of this sensor is 2 seconds.

Specs of Digital Temperature-Humidity Sensor (DHT22)

  • Brand: GW
  • Model: AM2302
  • Type of Signals: Digital Signals (No need for analog output)
  • Sensor: Temperature-Humidity Digital Sensor (DHT22)
  • Compatible Power Supply: DC 3.3V~5V
  • 1-Wire Bus Digital Output
  • This sensor has the Polymer Capacitor sensing element
  • Operating Temperature ranges from -40oC to 80oC
  • (+/- 0.5%) Accuracy
  • 0% ~ 100% RH Humidity Range
  • (Max. +/- 5% RH)
  • +/- 0.3% RH Humidity Hysteresis
  • 1oC / 1% RH Sensitivity Resolution
  • +/- 1% RH and +/- 0.2oC Repeatability
  • +/- 0.5% RH/year Long-Term Stability
  • Average sensing period is 2 seconds
  • The DHT22 Digital Sensor is fully interchangeable
  • Number of Pins: 4 Pins
  • Pitch (Pin Spacing): 0.1-inch
  • Install Style is Plug-in
  • Low-Power / High-Frequency Digital Sensor
  • Power Triode
  • PNP Structure
  • Made of Silicon
  • 0 Common Point Contact Diode (Special Function)
  • Schottky Diode Construction
  • Dimensions: 5.9cm x 2.7cm x 1.35cm / 59mm x 27mm x 13.5mm


The Dallas One Wire IS NOT COMPATIBLE with the Digital Temperature-Humidity Sensor (DHT22). In other words, in the case of multiple sensors, each sensor needs a separate connection to data-pin.